CN104877507A - External wall latex paint with good aging resistance and weather resistance and preparation method thereof - Google Patents

Abstract

The invention discloses external wall latex paint with good aging resistance and weather resistance and a preparation method thereof. The external wall latex paint with the good aging resistance and weather resistance is prepared from raw materials including 30 to 35 parts of pure acrylic emulsion, 5 to 7 parts of dispersible adhesive powder, 1 to 1.5 parts of glycerin monostearate, 6 to 8 parts of activated clay, 7 to 9 parts of corn straw, 7 to 9 parts of pearl wool leftover material, 2 to 3 parts of ammonium hydrogen carbonate, 2 to 3 parts of polyvinylpyrrolidone, 13 to 15 parts of nanosilicon dioxide, 0.5 to 0.7 parts of di-2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate) and 95 to 105 parts of water by weight. The external wall latex paint with the good aging resistance and weather resistance is scientific and reasonable in composition proportion, the pure acrylic emulsion matches with the dispersible adhesive powder to serve as film forming base stock, micro-porous surface activated padding prepared through using a special manufacturing technique to carry out surface activation on the corn straw, activated clay and the like, granulating, sintering under a high temperature and crushing can be better dispersed in the latex composition, and the prepared paint is good in covering power, uniform in coating, good in weather resistance, capable of resisting aging, long in service life, low in production cost and convenient for industrial control.

Description

A kind of anti-aging weather-proof good exterior wall latex coating and preparation method thereof

Technical field

The present invention relates to a kind of coating and preparation method thereof, particularly a kind of anti-aging weather-proof good exterior wall latex coating and preparation method thereof.

Background technology

Along with the raising of living standards of the people and the development of society; the selection of people's External Wall coating; not only rest on the most basic in the protection of ground, more require that the construction of coating succinctly facilitates simultaneously, require that color keeps lasting contour cosmetic requirement simultaneously.At present, the exterior coating that China adopts is mainly base-material with ACRYLIC EMULSION.Water-borne acrylic coatings has the advantages such as moderate cost, weathering resistance is excellent, adjustable good, organic solvent-free release, is a development in recent years class coating products very rapidly.In recent years, along with the deterioration of environment, coat the exterior coating of buildings except being exposed to the sun and rain, be also subject to the impact etc. that acid rain and the ultraviolet that causes because of depletion of the ozone layer strengthen, the weathering resistance of these factor External Wall coating is had higher requirement.

Summary of the invention

The object of this invention is to provide a kind of anti-aging weather-proof good exterior wall latex coating and preparation method thereof.The present invention adopts pure-acrylic emulsion to coordinate re-dispersible glue powder as film forming binder in formula, adopt atlapulgite, maize straw, nano silicon as filler, by the modified sintering of surface active, be prepared into the surface active filler with loose and porous structure, can not only better be dispersed in latex coating, and microvoid structure plays good sound-absorbing, heat insulation effect; Include the antioxidative components such as two Lauryl Alcohol esters, make the coating made have good weathering resistance simultaneously anti-aging, shelf-stable, workability is good, long service life.

In order to realize object of the present invention, the present invention is by following scheme implementation:

An anti-aging weather-proof good exterior wall latex coating, is made up of the raw material of following weight part: pure-acrylic emulsion 30-35, re-dispersible glue powder 5-7, glyceryl monostearate 1-1.5, atlapulgite 6-8, maize straw 7-9, PE Foam scrap stock 7-9, bicarbonate of ammonia 2-3, polyvinylpyrrolidone 2-3, nano silicon 13-15, two Lauryl Alcohol ester 0.5-0.7, water 95-105;

A kind of anti-aging weather-proof good exterior wall latex coating of the present invention, be made up of following concrete steps:

(1) maize straw crushed after being dried is become 200 order powder, with atlapulgite mixing and ball milling 20 minutes, then add nano silicon to mix, water and the glyceryl monostearate of 3 times amount is added in mixed powder, form dispersed paste after stirring 40 minutes with the speed of 600 revs/min, then by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtains surface active filler;

(2) polyvinylpyrrolidone is added in the water of 3 times amount, be heated to while stirring dissolve completely, then granulation in tablets press is jointly joined with surface active filler, bicarbonate of ammonia in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, the PE Foam scrap stock of pure-acrylic emulsion, re-dispersible glue powder, pulverizing are slowly added under the rotating speed of 450-500 rev/min, disperse after 15-20 minute, improve rotating speed to 800 rev/min, add mixed powder A and all the other remaining components of step (2) successively, disperse after 20 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.

The invention has the beneficial effects as follows: present component proportioning is scientific and reasonable, pure-acrylic emulsion is adopted to coordinate re-dispersible glue powder as film forming binder, adopt special manufacturing process, maize straw, atlapulgite etc. are carried out granulation after surface active, pulverize after high temperature sintering, the filler with the surface active of micropore made, can better be dispersed in latex component, the coating paint film opacifying power made is good, and film is even, and weathering resistance is good, anti-aging, long service life, and production cost is low, is convenient to Industry Control.

Specific embodiments

Below by specific examples, the present invention is described in detail.

An anti-aging weather-proof good exterior wall latex coating, is made up of the raw material of following weight part (kilogram): pure-acrylic emulsion 30, re-dispersible glue powder 5, glyceryl monostearate 1, atlapulgite 6, maize straw 7, PE Foam scrap stock 7, bicarbonate of ammonia 2, polyvinylpyrrolidone 2, nano silicon 13, two Lauryl Alcohol ester 0.5, water 95;

A kind of anti-aging weather-proof good exterior wall latex coating of the present invention, be made up of following concrete steps:

(1) maize straw crushed after being dried is become 200 order powder, with atlapulgite mixing and ball milling 20 minutes, then add nano silicon to mix, water and the glyceryl monostearate of 3 times amount is added in mixed powder, form dispersed paste after stirring 40 minutes with the speed of 600 revs/min, then by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtains surface active filler;

(2) polyvinylpyrrolidone is added in the water of 3 times amount, be heated to while stirring dissolve completely, then granulation in tablets press is jointly joined with surface active filler, bicarbonate of ammonia in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, the PE Foam scrap stock of pure-acrylic emulsion, re-dispersible glue powder, pulverizing are slowly added under the rotating speed of 450 revs/min, disperse after 15 minutes, improve rotating speed to 800 rev/min, add mixed powder A and all the other remaining components of step (2) successively, disperse after 20 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.

Water-based exterior wall paint of the present invention adopts the form of construction work of roller coat, brushing, spraying, and coating appearance of film of the present invention is full, smooth, good without lump, glossiness; Water-fast 96 hours, alkaline-resisting 48 hours without exception; Abrasion resistance is tested 2000 times and is passed through, and film is without breakage; Artificial ageing resistance test 600 hours non-foaming, do not peel off, flawless.

Claims (2)

1. an anti-aging weather-proof good exterior wall latex coating, it is characterized in that, be made up of the raw material of following weight part: pure-acrylic emulsion 30-35, re-dispersible glue powder 5-7, glyceryl monostearate 1-1.5, atlapulgite 6-8, maize straw 7-9, PE Foam scrap stock 7-9, bicarbonate of ammonia 2-3, polyvinylpyrrolidone 2-3, nano silicon 13-15, two Lauryl Alcohol ester 0.5-0.7, water 95-105.

2. a kind of anti-aging weather-proof good exterior wall latex coating according to claim 1, is characterized in that, be made up of following concrete steps:

(1) maize straw crushed after being dried is become 200 order powder, with atlapulgite mixing and ball milling 20 minutes, then add nano silicon to mix, water and the glyceryl monostearate of 3 times amount is added in mixed powder, form dispersed paste after stirring 40 minutes with the speed of 600 revs/min, then by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtains surface active filler;

(2) polyvinylpyrrolidone is added in the water of 3 times amount, be heated to while stirring dissolve completely, then granulation in tablets press is jointly joined with surface active filler, bicarbonate of ammonia in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, the PE Foam scrap stock of pure-acrylic emulsion, re-dispersible glue powder, pulverizing are slowly added under the rotating speed of 450-500 rev/min, disperse after 15-20 minute, improve rotating speed to 800 rev/min, add mixed powder A and all the other remaining components of step (2) successively, disperse after 20 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.